He's experienced as winger. For international football which is another test, he is more experienced than even Mata & Micki for the obvious reason the other couldn't make in to the tournament or get play time. For club European football, while he did have plenty of experience.
There are players who can enter a good level in their prime while doesn't enjoy long good level career. Milito comes to mind. Not exactly having any experience dealing with big pressure but it didn't hinder him one bit at his prime playing for Inter. Perisic seems to be in this category since for those who watch him play the last few years, he's transformed from the one in bundesliga, majority find familiar.